4" X 10" Luxury Victorian Floor Register Grille With Dampers - Luxury Contempo Decorative Grate - HVAC Vent Duct Cover - Matte Black w16h16 + Product Details Size -

+ Product Details Size - 36"w X 18"h is the size for the duct opening measurement only

Insulation – A thick blanket of fiberglass insulation provides you with an R-Value of 8

5 in" - SEE BELOW IN DESCRIPTION HOW TO MEASURE A GRILLE

+ Product Details Size - 25"w X 30"h is the size for the duct opening measurement only

+ Product Details Size – 30"w X 18"h is the size for the duct opening measurement only

4" X 10" Luxury Victorian Floor Register Grille With Dampers - Luxury Contempo Decorative Grate - HVAC Vent Duct Cover - Matte Black w16h16 + Product Details Size -+Product Details Size 4"h x 10"w is the size for the duct opening measurement only, actual front end outer dimensions are approximately 5. 5" height x 11. 5" width High Quality Solid rigid steel body for durability and reliability with dampers operable by switch for airflow directional control. Installation Location Floor. Design Premium plated finish and modern contempo design forming a luxurious & impressive piece for your home. Quality Packaging